Quote Originally Posted by Big D
Unlimited knowledge: You'd have the answers to all the big questions, but it'd be hard to convince other people. Also, your mind would be a clutter with an infinite assortment of trivial facts, as well as the info that actually matters.
But we have quite a lot of knowledge anyway in our heads, and we can still usually pull relevant data to the fore. Still, if I ever meet a genie, "I wish to know everything" isn't as simple as that. Clauses are necessary:

"I wish to know everything excepting fictional information I have not already observed, I don't wish to know the future, and I don't wish to have more knowledge than I can handle without going insane."

Wily ones, those genies. One has to be careful. But I think that would cover it, because knowledge beyond that would be awesomesauce. I want to still be able to enjoy plot twists in movies and books, which is why fiction is ruled out.